# Holothuria (Cystipus) rigida

> species of echinoderm

**Wikidata**: [Q5253472](https://www.wikidata.org/wiki/Q5253472)  
**Source**: https://4ort.xyz/entity/holothuria-cystipus-rigida


## References

1. World Register of Marine Species
2. The IUCN Red List of Threatened Species 2022.2
3. Annotated Checklist of the Echinoderms From the Kiunga Marine National Reserve, Kenya. Part I: Echinoidea and Holothuroidea
4. IUCN Red List
5. Taxonomy database of the U.S. National Center for Biotechnology Information
6. Integrated Taxonomic Information System
7. Encyclopedia of Life
8. Global Biodiversity Information Facility
9. Catalogue of Life in Taiwan
10. TAXREF v15.0
11. TAXREF v16.0
12. Interim Register of Marine and Nonmarine Genera
13. SeaLifeBase
14. Ocean Biodiversity Information System
15. India Biodiversity Portal
16. Open Tree of Life reference taxonomy version 3.6
17. CalPhotos